ol·iv·ine /ˈɑləˌvin/
  橄欖石,黃綠
  Ol·i·vine n.  Min. A common name of the yellowish green mineral chrysolite, esp. the variety found in eruptive rocks.  It is a silicate of magnesium and iron ((Mg,Fe)SiO4).
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  olivine
       n : a mineral consisting of magnesium iron silicate; a source of
           magnesium